Patent · US Expired

Continuous polymerization process for the manufacture of superabsorbent polymers

US6987151B2 · kind B2 · utility

34Cited by

13References

22Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Herbert Gartner · Baden-Baden, DE
Katrin Nuyken · Bühl, DE
Deno F. O'Connor · Midland, US

Key dates

Filing date	Aug 26, 2002
Grant date	Jan 17, 2006
Priority date	—
Expiry date	Sep 22, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/182
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A continuous process for producing water-insoluble, water-swellable polymers comprises subjecting a monomer and initiator to polymerization conditions in a reactor system having at least 3 zones.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.